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Keywords: estimation
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Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3582703
... A combination of Petrophysical logs from five representative wells and 3D seismic volume acquired in OSCAR Filed, Niger Delta, Nigeria, has been analysed to study the carbon-dioxide (CO 2 ) sequestration potential of ‘OSCAR Field’ The aim of the study was to estimate the volume of CO 2 that can...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3581908
... Accurate source estimation is an important component in full waveform inversion (FWI). A conventional approach to determine the signature employs transfer function estimation between the observed and modelled data. Depending on the scenario, this might lead to a biased signature due to lacking...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3582868
... deviation machine learning test data decision tree learning applied geoscience porosity estimation reservoir property uncertainty quantification estimation A Random Forest regressor based uncertainty quantification of porosity estimation from multiple seismic attributes Caifeng Zou*, Luanxiao...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3582062
... In recent years, machine learning (ML) approaches have gained significant attention in subsurface property estimation problems. However, due to the data-driven nature, people often interrogate the reliability of such ML approaches, especially for regions where ground truth data are sparse...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3583026
... data property estimation borehole exploration geophysicist 10 workflow estimation seismic line interpretation wind farm site characterization elastic property Deep learning applications for wind farms site characterization and monitoring Aria Abubakar*1, Mette Juncker Brædstrup1, Haibin Di1...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3583117
.... Moreover, it has been demonstrated that joint inversion of elastic parameters and lithology relaxes the seismic inversion dependency on the low-frequency model prior. Compared to Pp prestack AVA inversion, joint Pp-Ps prestack inversion can provide a more accurate estimate of VP/VS ratio and density...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3583394
... are not required in our method. The traditional denoising method is used to process the noisy data to get an initial estimation of the clean signals and noises, and then we generate the training set containing noisy-clean sample pairs based on the initial estimation. An iterative training strategy and a training...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3583265
... Wavefront attributes, such as local dips and curvatures of seismic events, are used in different seismic data processing methods, from prestack data enhancement to migration to tomography. The attributes’ estimation for prestack data is a time-consuming and computationally expensive process. We...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3583286
... Attenuation parameter estimation, through the quality factor Q, is very important in many targets at the exploration scales, as it can provide direct information about subsurface fluid content and is also a key parameter for migration focalisation in Q-compensated migration. For constant Q...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3583448
... artificial intelligence near-offset trace expanded abstract cascade artifact interpolation error field data example estimation A CL-SRME work ow for inversion of shallow-water data with missing near-offset traces Dmitrii Merzlikin*, Garret Flagg, Zhiming Wu, Cintia Lapilli, Frederico Xavier de Melo...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3584072
... estimation vector algorithm louboutin matrix estimation herrmann artificial intelligence computational overhead wavefield exploration geophysicist 10 van leeuwen trace estimation gradient Ultra-low memory seismic inversion with randomized trace estimation Mathias Louboutin1, Felix J...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3590447
... imaging, by itself and jointly with first arrival analysis, it is being carried out assuming the subsurface is isotropic. There is a need to incorporate anisotropy in surface-wave inversion and to pursue joint estimation of VS and transversely isotropic parameters. In this study, we demonstrate multimode...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3594593
... at every location. To address the challenge, we proposed a semi-supervised learning approach with a hybrid optimizer, i.e., Genetic-evolutionary adaptive moment estimation (G-ADAM) for acoustic impedance estimation from seismic data. In this approach, reflectivity and seismic loss functions are used...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3594545
... The running high-speed train (HST) stimulates various seismic waves near a high-speed railway (HSR) when it runs on an HSR. Thus the received seismic signal can be further utilized to estimate the HST speed without using any onboard device. Based on the assumption that every carriage of the HST...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3594517
...A relationship between coordination number, porosity, and pressure for estimation of elastic properties of porous rocks using contact models Min Li*, Jingyi Guo, Yuefeng Sun, Texas A&M University Summary et al., 2004; Garcia et al., 2006), it has been found that coordination number changes...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3594526
... frequency shot gather signal leakage eigenimage upstream oil & gas applied geoscience expanded abstract exploration geophysicist 10 noise attenuation reservoir characterization attenuation snr estimation ground roll localized eigenimage noise model frequency band input data...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3594895
... A 2D seismic AVO inversion and well log analysis was performed to characterise a geothermal reservoir in the northern Zealand of Denmark in 2019. This case study shows how from the seismic inversion results it is possible to interpret different lithologies and estimate porosities through links...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3577776
... estimations of the input features’ quality and uncertainty ranges. Finally, we applied an iterative approach to estimate changes in the water saturation, gas saturation and pore pressure of the reservoir. The iterative approach compares the predicted outputs against production, injection and pressure data...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3563438
... The seismic quality factor, Q , is a critical parameter for seismic data processing and interpretation. Distributed acoustic sensing (DAS) provides a unique acquisition geometry that is ideal for estimating Q . We use a simple twolayer model to generate synthetic DAS data along a vertical well...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3579803
... Full waveform inversion (FWI) requires an accurate estimation of source signatures. Indeed, the coupling between the source signatures and the subsurface model can make small errors in the former to translate into significant errors in the latter. When direct methods are used to solve...

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